strange check shove

I've not got a lot of info on the villian here I 3/4 bet pot then the guy shoves, what could he most likely have in this position also just now he's just done it again/

pokerstars Hand #114963547253: Tournament #894188185, $8.00+$0.80 USD Hold'em No Limit - Level VI (40/80) - 2014/04/18 17:07:09 WET [2014/04/18 12:07:09 ET]
Table '894188185 375' 9-max Seat #6 is the button
Seat 1: Botti1987 (4035 in chips)
Seat 2: $_SerjVikT_$ (4964 in chips)
Seat 3: nbalasova (7343 in chips)
Seat 4: VVS777 (2857 in chips)
Seat 5: aq-kruss (2103 in chips)
Seat 6: 0Magic14 (2606 in chips)
Seat 7: bc west (4037 in chips)
Seat 8: gustavo leos (5315 in chips)
Seat 9: Betonprobs (6499 in chips)
Botti1987: posts the ante 10
$_SerjVikT_$: posts the ante 10
nbalasova: posts the ante 10
VVS777: posts the ante 10
aq-kruss: posts the ante 10
0Magic14: posts the ante 10
bc west: posts the ante 10
gustavo leos: posts the ante 10
Betonprobs: posts the ante 10
bc west: posts small blind 40
gustavo leos: posts big blind 80
*** HOLE CARDS ***
Dealt to 0Magic14 [Ac Ts]
Betonprobs: folds
Botti1987: folds
$_SerjVikT_$: folds
nbalasova: raises 80 to 160
VVS777: folds
aq-kruss: folds
0Magic14: calls 160
bc west: folds
gustavo leos: folds
*** FLOP *** [3h 6c 6s]
nbalasova: checks
0Magic14: bets 322
nbalasova: raises 6851 to 7173 and is all-in
0Magic14: folds [Ac Ts]
Uncalled bet (6851) returned to nbalasova
nbalasova collected 1174 from pot
nbalasova: doesn't show hand
*** SUMMARY ***
Total pot 1174 | Rake 0
Board [3h 6c 6s]
Seat 1: Botti1987 folded before Flop (didn't bet)
Seat 2: $_SerjVikT_$ folded before Flop (didn't bet)
Seat 3: nbalasova collected (1174)
Seat 4: VVS777 folded before Flop (didn't bet)
Seat 5: aq-kruss folded before Flop (didn't bet)
Seat 6: 0Magic14 (button) folded on the Flop
Seat 7: bc west (small blind) folded before Flop
Seat 8: gustavo leos (big blind) folded before Flop
Seat 9: Betonprobs folded before Flop (didn't bet)

What was strange was the bet by 0magic14. What were you hoping would happen? Your hand is too strong to bet/fold. You should have checked behind.

I think your hand has some showdown value so i would try to get there as cheaply as possible... Therefore I wouldn't lead out in this situation

What's wrong with that? nbalasova is the big stack of the table, and if he had a six a checkraise for 28% of his stack isn't a bad thing to do.